Synthesis and electrochemical properties of Li-rich spinel type LiMn2O4 powders by spray pyrolysis using aqueous solution of manganese carbonate

▶ The rechargeable capacity and cycle performance of the cathode for lithium ion battery were significantly improved by using Li-rich LiMn2O4 powders derived from spray pyrolysis. ▶ When manganese carbonate is used as a starting material, the industrial problem in the spray pyrolysis which the toxic gas is discharged in the powders production is overcome. Therefore, this powder preparation method is effective for the powder production of other metal oxide from liquid phase as the clean process without the toxic and corrosive gases. ▶ It is clear that Li-rich LiMn2O4 cathode exhibits excellent cycle stability superior to metal doped LiMn2O4. ▶ Li1.09Mn1.91O4 cathode exhibits also excellent cycle stability without the doping of foreign metal (Al, Cr , Mg, etc.) reported in past.